The most stable position of a cyclohexane would be the "chair-position". But if the cyclohexane has 2 or more t-butyl groups off the 1 and 4 position then the boat position is the best due to the avoidance of steric interference.
Remember: more stable means less potential energy (it won't blow up on you)!
This page needs some editing in relation to conformational changes. What is there is very crude, and there is no reference to the calculation used to get the energy values of the various conformations. It's nice to see the use of the IUPAC definition of the half chair (four coplanar atoms).
Hansonrstolaf ( talk) 00:14, 7 March 2011 (UTC)
no: Ring inversion does not occur in cyclohexanes only. Although the way the ring flip is written now it's not obvious. -- Cubbi 02:37, 4 June 2007 (UTC)
Keep::See above comment. Fuzzform 00:38, 26 October 2007 (UTC)
I can't seem to find any discussion of A-values on wiki! This seems like the obvious place for it, sicne they're always calcuated for cyclohexane, but possibly merits its own page - any thoughts?? Seansheep ( talk) 09:22, 14 March 2008 (UTC)
I was quite shocked to see the conformations listed here. There was "envelope" listed as a major conformation, but with no explanation of what it was. I think it's someone's misinterpretation of this, the most common conformation for cyclopentanes, so I simply removed it. I suppose that a half-chair cyclohexane looks quite similar to that. Also, there was mixed use of "twist-boat" (which is what I have always heard and used) and "twist" (which I was unfamiliar with). I am recommending that we follow the recommendations of the Nelson paper I've cited in the lede section, and use twist-boat throughout, so I made the appropriate changes. Is this reasonable? Did I miss something? Walkerma ( talk) 18:48, 8 August 2011 (UTC)
Will anyone object if I replaced this citation-less, near indecipherable morass with a short, referenced, scholarly paragraph? Notes to defend this diagnosis to follow. Le Prof Leprof 7272 ( talk) 18:24, 30 May 2014 (UTC)
Compare the definition of cis and trans in paragraph 1 of this article's "Disubstituted cyclohexanes" section, as of today's date:
to the definition contained in a reliable source:
See http://www.chem.qmul.ac.uk/iupac/stereo/BC.html#26. Le Prof Leprof 7272 ( talk) 20:05, 30 May 2014 (UTC)
The section "Forced conformations" was added by "Uncle Al", a well-known physics crackpot, and the links in the section go to his own homepage. I don't know much about this topic so I cannot comment on the accuracy of the information he added. But he inserted some long-lived | nonsense into the page on the equivalence principle, so I think it's likely that his edits here were similarly bogus. Amaurea ( talk) 13:31, 29 September 2016 (UTC)
It would be most helpful to show both boat and chair conformations at the beginning. There is a beautiful picture of the chair conformation, but we need a similar one of the boat conformation. Can anyone supply it? CharlesHBennett ( talk) 13:13, 22 November 2016 (UTC)
Only some of the 5 numbers 1,2,3,4,5 are mentioned in Wikipedia text. Please mention all five. And explain E=Energy unless already explained.
91.155.24.127 ( talk) 09:48, 21 September 2017 (UTC)
I removed all dispute tags, and I generally dumbed down the article to keep it (fairly) factual and uncomplicated. If others think that my revision was too drastic, then revert my work.-- Smokefoot ( talk) 01:33, 20 November 2019 (UTC)
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This article was the subject of a Wiki Education Foundation-supported course assignment, between 22 August 2022 and 2 December 2022. Further details are available
on the course page. Student editor(s):
Leslieblakney75,
Kcat3,
Bluelucero (
article contribs).
— Assignment last updated by Kcat3 ( talk) 00:25, 17 November 2022 (UTC)
The most stable position of a cyclohexane would be the "chair-position". But if the cyclohexane has 2 or more t-butyl groups off the 1 and 4 position then the boat position is the best due to the avoidance of steric interference.
Remember: more stable means less potential energy (it won't blow up on you)!
This page needs some editing in relation to conformational changes. What is there is very crude, and there is no reference to the calculation used to get the energy values of the various conformations. It's nice to see the use of the IUPAC definition of the half chair (four coplanar atoms).
Hansonrstolaf ( talk) 00:14, 7 March 2011 (UTC)
no: Ring inversion does not occur in cyclohexanes only. Although the way the ring flip is written now it's not obvious. -- Cubbi 02:37, 4 June 2007 (UTC)
Keep::See above comment. Fuzzform 00:38, 26 October 2007 (UTC)
I can't seem to find any discussion of A-values on wiki! This seems like the obvious place for it, sicne they're always calcuated for cyclohexane, but possibly merits its own page - any thoughts?? Seansheep ( talk) 09:22, 14 March 2008 (UTC)
I was quite shocked to see the conformations listed here. There was "envelope" listed as a major conformation, but with no explanation of what it was. I think it's someone's misinterpretation of this, the most common conformation for cyclopentanes, so I simply removed it. I suppose that a half-chair cyclohexane looks quite similar to that. Also, there was mixed use of "twist-boat" (which is what I have always heard and used) and "twist" (which I was unfamiliar with). I am recommending that we follow the recommendations of the Nelson paper I've cited in the lede section, and use twist-boat throughout, so I made the appropriate changes. Is this reasonable? Did I miss something? Walkerma ( talk) 18:48, 8 August 2011 (UTC)
Will anyone object if I replaced this citation-less, near indecipherable morass with a short, referenced, scholarly paragraph? Notes to defend this diagnosis to follow. Le Prof Leprof 7272 ( talk) 18:24, 30 May 2014 (UTC)
Compare the definition of cis and trans in paragraph 1 of this article's "Disubstituted cyclohexanes" section, as of today's date:
to the definition contained in a reliable source:
See http://www.chem.qmul.ac.uk/iupac/stereo/BC.html#26. Le Prof Leprof 7272 ( talk) 20:05, 30 May 2014 (UTC)
The section "Forced conformations" was added by "Uncle Al", a well-known physics crackpot, and the links in the section go to his own homepage. I don't know much about this topic so I cannot comment on the accuracy of the information he added. But he inserted some long-lived | nonsense into the page on the equivalence principle, so I think it's likely that his edits here were similarly bogus. Amaurea ( talk) 13:31, 29 September 2016 (UTC)
It would be most helpful to show both boat and chair conformations at the beginning. There is a beautiful picture of the chair conformation, but we need a similar one of the boat conformation. Can anyone supply it? CharlesHBennett ( talk) 13:13, 22 November 2016 (UTC)
Only some of the 5 numbers 1,2,3,4,5 are mentioned in Wikipedia text. Please mention all five. And explain E=Energy unless already explained.
91.155.24.127 ( talk) 09:48, 21 September 2017 (UTC)
I removed all dispute tags, and I generally dumbed down the article to keep it (fairly) factual and uncomplicated. If others think that my revision was too drastic, then revert my work.-- Smokefoot ( talk) 01:33, 20 November 2019 (UTC)
![]() | This ![]() It is of interest to the following WikiProjects: | ||||||||||
|
This article was the subject of a Wiki Education Foundation-supported course assignment, between 22 August 2022 and 2 December 2022. Further details are available
on the course page. Student editor(s):
Leslieblakney75,
Kcat3,
Bluelucero (
article contribs).
— Assignment last updated by Kcat3 ( talk) 00:25, 17 November 2022 (UTC)